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HDFS-8336. Expose some administrative erasure coding operations to HdfsAdmin (Contributed by Uma Maheswara Rao G)

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Vinayakumar B 2015-06-02 16:38:43 +05:30
parent 0799e1e4b6
commit 9b54e66f3e
2 changed files with 43 additions and 0 deletions
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3
hadoop-hdfs-project/hadoop-hdfs/CHANGES-HDFS-EC-7285.txt
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@ -265,3 +265,6 @@
HDFS-8481. Erasure coding: remove workarounds in client side stripped blocks
recovering. (zhz)
HDFS-8336. Expose some administrative erasure coding operations to HdfsAdmin
(Uma Maheswara Rao G via vinayakumarb)

40
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/client/HdfsAdmin.java
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@ -37,9 +37,11 @@ import org.apache.hadoop.hdfs.protocol.CacheDirectiveInfo;
import org.apache.hadoop.hdfs.protocol.CachePoolEntry;
import org.apache.hadoop.hdfs.protocol.CachePoolInfo;
import org.apache.hadoop.hdfs.protocol.EncryptionZone;
import org.apache.hadoop.hdfs.protocol.ErasureCodingZone;
import org.apache.hadoop.hdfs.protocol.HdfsConstants;
import org.apache.hadoop.security.AccessControlException;
import org.apache.hadoop.hdfs.tools.DFSAdmin;
import org.apache.hadoop.io.erasurecode.ECSchema;
/**
* The public API for performing administrative functions on HDFS. Those writing
@ -363,4 +365,42 @@ public class HdfsAdmin {
throws IOException {
dfs.setStoragePolicy(src, policyName);
}
/**
* Create the ErasureCoding zone
*
* @param path
* Directory to create the ErasureCoding zone
* @param schema
* ECSchema for the zone. If not specified default will be used.
* @param cellSize
* Cellsize for the striped ErasureCoding
* @throws IOException
*/
public void createErasureCodingZone(final Path path, final ECSchema schema,
final int cellSize) throws IOException {
dfs.createErasureCodingZone(path, schema, cellSize);
}
/**
* Get the ErasureCoding zone information for the specified path
*
* @param path
* @return Returns the zone information if path is in EC zone, null otherwise
* @throws IOException
*/
public ErasureCodingZone getErasureCodingZone(final Path path)
throws IOException {
return dfs.getErasureCodingZone(path);
}
/**
* Get the ErasureCoding schemas supported.
*
* @return ECSchemas
* @throws IOException
*/
public ECSchema[] getECSchemas() throws IOException {
return dfs.getClient().getECSchemas();
}
}